Port d49d3864

R=jgruber@chromium.org, joransiu@ca.ibm.com, jyan@ca.ibm.com, michael_dawson@ca.ibm.com, mbrandy@us.ibm.com

BUG=v8:5173
LOG=N

Review-Url: https://codereview.chromium.org/2141723003
Cr-Commit-Position: refs/heads/master@{#37659}